| 宫江萍,朱焕来,杜先利,毕然.长岭凹陷地温场分布特征及主控因素分析[J].矿产勘查,2025,16(9):2081-2089 |
| 长岭凹陷地温场分布特征及主控因素分析 |
| Analysis of the distribution characteristics and main controlling factors of geothermal field in Changling Depression |
| 投稿时间：2023-08-16 |
| DOI：10.20008/j.kckc.202509001 |
| 中文关键词: 地温场 分布特征 主控因素 长岭凹陷 |
| 英文关键词: ground temperature field distribution characteristics control factors Changling Depression |
| 基金项目:本文受黑龙江省自然科学基金研究团队项目(TD2021D001)资助。 |
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| 中文摘要: |
| 长岭凹陷位于松辽盆地中央坳陷区，蕴藏大量地热资源可利用。本文以长岭凹陷作为研究区，收集了 89口井 119个试油温度数据，对45件岩石样品进行热导率和生热率测试，重新刻画长岭凹陷现今地温场特征，并对其主控因素进行了分析。利用一维热传导方程预测了1000~3000 m埋深处温度以及不同地层的温度。长岭凹陷地温梯度为 3.4~4.2 ℃/100 m，平均地温梯度为 3.8 ℃/100 m，大地热流为 64~84 mW/m2，平均为 74 mW/m2。平面上，长岭凹陷有较高的地温梯度和大地热流值，地质构造、基地起伏、火成岩分布以及地下水活动等，这些因素都是导致研究区地表热流偏高的原因。研究成果对长岭凹陷地区地热能勘探以及开发利用有一定指导意义。 |
| 英文摘要: |
| Changling Depression is located in the central depression area of the Songliao Basin, containing alarge amount of geothermal resources that can be utilized. This article takes Changling Depression as the researcharea, collecting 119 oil testing temperature data from 89 wells, conducting thermal conductivity and heat generationtests on 45 rock samples, recharacterizing the current geothermal field characteristics of Changling Depression, andanalyzing its main control factors. The geothermal gradient in Changling Depression is between 3.4-4.2 ℃/100 m,with an average geothermal gradient of 3.8 ℃/100 m. The geothermal flow distribution is between 64-84 mW/m2, with an average of 74 mW/m2. Using one-dimensional heat conduction equation to predict temperature at depths of 1000-3000 m and temperatures in different formations. On the plane, Changling Depression has a high geothermal gradient and geothermal flow value, geological structure, base undulation, igneous rock distribution, and groundwater activity,all of which are the reasons for the high surface heat flow in the study area. The research results obtained have certainguiding significance for the exploration and development of geothermal energy in the Changling Depression area. |
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